DRV8818_12 Datasheet, PDF (5/20 Pages) Texas Instruments – STEPPER MOTOR CONTROLLER IC

DRV8818
www.ti.com
SLVSAX9A – SEPTEMBER 2011 – REVISED FEBRUARY 2012
RECOMMENDED OPERATING CONDITIONS
T_A = 25°C (unless otherwise noted)
V_M
V_CC
V_REF
R_X
C_X
Motor power supply voltage range⁽¹⁾
Logic power supply voltage range
VREF input voltage
R_X resistance value
C_X capacitance value
(1) All V_M pins must be connected to the same supply voltage.
MIN NOM MAX UNIT
8
35
V
3
5.5
V
0
V_CC
V
470
680 1500
kΩ
12
56
100
pF
ELECTRICAL CHARACTERISTICS
T_A = 25°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
Power Supplies
I_VM
V_M operating supply current
I_VCC
V_CC operating supply current
I_VMQ
V_M sleep mode supply current
I_VCCQ V_CC sleep mode supply current
V_UVLO
V_M undervoltage lockout voltage
V_CC undervoltage lockout voltage
VREF Input/Current Control Accuracy
V_M = 35 V, f_PWM < 50 KHz
f_PWM < 50 KHz
V_M = 35 V
V_M rising
V_CC rising
I_REF
VREF input current
ΔI_CHOP Chopping current accuracy
VREF = 3.3 V
VREF = 2.0 V, 70% to 100% current
VREF = 2.0 V, 20% to 56% current
Logic-Level Inputs
V_IL
Input low voltage
V_IH
Input high voltage
V_HYS Input hysteresis
I_IL
Input low current
I_IH
Input high current
R_PU
Pullup resistance
R_PD
Pulldown resistance
HOMEn Output
VIN = 0.3 × V_CC
VIN = 0.3 × V_CC
V_OL
Output low voltage
V_OH
Output high voltage
Decay Input
I_O = 200 μA
I_O = –200 μA
V_IL
Input low threshold voltage
V_IH
Input high threshold voltage
H-Bridge FETS
For fast decay mode
For slow decay mode
R_ds(on) HS FET on resistance
R_ds(on) LS FET on resistance
I_OFF
Motor Driver
V_M = 24 V, I_O = 2.5 A, T_J = 25°C
V_M = 24 V, I_O = 2.5 A, T_J = 25°C
t_OFF
t_BLANK
t_DT
t_R
t_F
Off time
Current sense blanking time
Dead time
Rise time
Fall time
Rx = 56 kΩ, Cx = 680 pF
Rx = 56 kΩ, Cx = 680 pF
SRn = 0
MIN
TYP
MAX UNIT
7
10 mA
0.4
4 mA
3
20 μA
0.5
20 μA
6.7
7.5
V
2.75
2.95
–3
3 μA
–5
5%
–10
10 %
0.7 × V_CC
–20
–20
0.3 × V_CC V
V
300
mV
20 μA
20 μA
1
MΩ
1
MΩ
0.7 × VCC
0.3 × VCC V
V
0.21 × VCC
V
0.6 × VCC
V
0.22
0.30 Ω
0.15
0.24 Ω
–20
20 μA
35
44
53 μs
900
1250
1500 ns
100
475
800 ns
10
80 ns
10
80 ns
Copyright © 2011–2012, Texas Instruments Incorporated
Product Folder Link(s): DRV8818
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